Silo.



O. HARSTAD.

SILO.

APPLICATION FILED JULY 10, 1914.

PatentedSept. 21, 1915.

HQSHEETS-SHEET 1.

@Xkbncoow 0. HARSTAD. SILO.

APPLICATION FiLED JULY 10, 1914.

1 1 54,5 1 l PatentedSept. 21, 1915.

3 SHEETSSHEE'! 2.

v O- Harsfozd d Hot new 0. HARSTAD.

SJLO.

' APPLICATION FILED JULY 10. 1914 1,1 54,51 1. Patented Sept. 21, 1915.

3 SHEETSQSHEET a.

gwuw/toz 0- Ha siaa I bllli ll jllli "PBUEENT Fldli hle one nans'ran, or lvronrnvlnno, MINNESOTA, Assrsuon 'IO JOHN OGQNNOR, or molvrnvrnno, MINNESOTA.

SILQ.

Specification of Letters Patent.

Patented Sept. 21, 1915 To all ai /101M172? may concern:

lie it known that l, OLE Hans'rao, a citizen oii'the United States, residing at lViontevideo, inthe county of Chippewa and State of Minnesota, have invented certain new and useful improvements in Silos; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to silos, suclr as are employed on farms for the retention of ensilage, and the nimary object of the invention is the provision of a silo construction wherein the retaining capacity of the silo may be varied to suit the requirements of the crop harvested.

Another object of this invention is the provision of a silo which is constructed of 'a plurality of removable built-up sections or planks, which are supported in their respective positions by suitable guiding arms so that the. height of the silo may be varied as required, thcrebya-egulating the retaining capacity of the silo.

With the foregoing and other objects in view this invention consists in such novel features of construction, combination and arrangement oi. parts as will be hereinafter more fully described, illustrated in the accompanying drmvings and claimed.

' In describing the invention in detail reference will be had to the accompanying drawings wherein like characte is oi reference designate like, or corresponding parts throughout the several views, and in which Figure l is a side elevation of the improved silo, Fig. 2 is a fragmentary cross sectional view through the silo, Fig. 3 is an enlarged cross section of one ofthe guiding and supporting braces for the various sections of which the silo is composed, Fig. 1 is a fragmentary. vertical section through a part of the silo construction, Fig. 5 is a plan view of a stay rod supporting arm, used in the construction of the silo, Fig. 6 is a side elevation of Fig. 5, and Fig. 7 is a detail View of a lock employed in the construction of the silo.

Referring moreparticula-rly to the drawings, 1 designates the foundation or base, which is formed or constructed of concrete or other suitable material and which has a plurality of angled braces 2 secured thereto,

. 11 are securely in a circle about-the center of the base, by stay bolts 3. The stay bolts 3 are inserted in the foundation 1 and project vertically therefrom, extending through the lateral bases 4 of the angled braces 2 shown in Fig. at of the drawings. The angled braces 2 have securedthereto channel irons and 6, which channel irons extend vertically upward from the foundation 1 .and are spaced from each other, having wedge-shaped strips 7 positioned between their facing sides. The angled sides of the channel irons 5 and 6 extend outwardly from the wedge-shaped strip 7 and provide guideways for the reception of the ends of boards or planks 9, which are used in the construction of the walls of the silo. Owing to the fact that the channel irons are positioned in substantially a circle about the central axis of the foundation 1, the insertion of the planks 9 into the channels formed by the angled sides thereof will form a? polyhedral-shaped. retaining body for the ensilage. Suitable bolts 10 are inserted through the vertical sides of the angled bracing arms 2 andthrough the channel irons for securely holding the channel irons connected to the braces.

The vertical channel irons 5 and 6 are braced by suitable stay rods 11, the lowermost tier or row of whichstay rods are secured to the horizontally extending sides 4 of the braces 2 and extend diagonally across the space between the adjacent angled irons, as is clearly shown in Fig. 1 of the drawings. j

The silo is constructed of a plurality of vertical sections, which sections are formed by mounting sections of the channel irons upon the other sections, forming vertical tiers of the channel irons, as is clearly shown in Fig. l of the drawings. The meeting ends of the channel irons' which are formed in vertical tiers have stay rods attaching plates 12 secured adjacent thereto, by the insertionof bolts 14 which are positioned centrally within the plates 12, through the plates and the wedgeshaped strip 7, as is clearly shown in Fig. 3 of the drawings." The plates 12 are providedwith annular transversely eX- tending flanges 15 formed thei eon, which flanges are provided with transversely eX- tending openings 16, in which the ends of the stay rods 11 are inserted. The stay rods attached to the flanges 15 by as is clearly nuts or other suitable fastening devices. The flanges 15 which are formed upon the plates 12 are annular-1y disposed, owing to the fact that the plates are polyhedrons, and the flanges extend along various of the sides of the plates as is clearly shown in Fig. 5 of the drawings, leaving the two opposite vertical ends of the plates free from the transversely extending flanges, as said flanges are not necessary upon this portion of the plates. The sections 18 of the flanges 15, are disposed diametrically opposite each other, and positioned vertically along the sides of the plates 12 and are provided for attachment with the arms or bars 19, which extend around the circumference of the silo construction, forming braces for the top sections of which the silo is-provided, so as to insure the rigidity of the walls of the silo.

The plates 12 have transversely extending flanges 20 formed upon the sides opposite to the flanges 15. The flanges 20 engage the marginal edges of thechannel irons 5 and 6, for securely holding them in place. Suitable washers 21, which have flanges 22 formed thereupon for engagement with the edges of the channel irons 5 and 6, are mounted upon the opposite sides of the channel irons from' the plates 12 and the plates 21 are bound to secure engagement with the edges of the channel irons by the bolts 14, thereby securely holding the various channel irons in position and forming a composite rigid skeleton fame the channels of which the various boards 9 are mounted for forming the walls of the silo.

The walls of the silo which are composed of boards 9 may be provided with suitable openings in which are mounted doors 25 and 26, through which doors access may be gained to the interior of the silo.

A suitable roof 27 of the usual construction is provided for mounting upon the uppermost sections of the silo.

In Fig. 7 of the drawings the door and mechanism for holding the door in place in the silo is shown. This door may be positioned at any suitable place within the silo, by the proper positioning of. the boards 9,

which are clutched so as to provide for the reception ofthe door 26' at different eleva tions along the vertical length of the silo.

ends inserted beneath the straps 35, which straps are. secured to the board 9, which are clutched by receiving the door 26. By movement of the hand lever 30, the various bolts are slid for movement of their-terminal ends from beneath the straps 35 so as to permit the removal of the door 26 for the giving of access to the interior of the silo,

In reducing the invention to practice certain minor features of construction, com

bination ,and arrangement of parts may necessitate alterations to which the 103119111368 is entitled provided such alterations are comprehended within the scope of what is claimed.

hat is claimed is 4 In a silo construction, a foundation, a plurality of angled braces secured to said Foundation. channel irons extendingupward from the foundation and spaced from'each other forming guideways, wedge shaped strips between the facing sides of the channel irons and secured to said angled braces, horizontally extending boards having their ends seated in the guideways of the channel irons and means for securing the channel irons to the angled braces.

In testimony whereof I ailix my signature in presence of two witnesses.

OLE HARSTAD.

Witnesses JonN OCoNNoR, B. A. lVnrrMoRE. 

